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Re: Column Filtering in Logical Replication

Alvaro Herrera <alvherre@alvh.no-ip.org>

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From: Alvaro Herrera <alvherre@alvh.no-ip.org>
To: Rahila Syed <rahilasyed90@gmail.com>
Cc: Amit Kapila <amit.kapila16@gmail.com>, Tomas Vondra <tomas.vondra@enterprisedb.com>, Peter Smith <smithpb2250@gmail.com>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2021-12-13T21:19:54Z
Lists: pgsql-hackers 
On 2021-Dec-13, Alvaro Herrera wrote:

> Hmm, I messed up the patch file I sent.  Here's the complete patch.

Actually, this requires even a bit more mess than this to be really
complete if we want to be strict about it.  The reason is that, with the
patch I just posted, we're creating a new type of representable object
that will need to have some way of making it through pg_identify_object,
pg_get_object_address, pg_identify_object_as_address.  This is only
visible as one tries to patch object_address.sql (auditability of DDL
operations being the goal).

I think this means we need a new OBJECT_PUBLICATION_REL_COLUMN value in
the ObjectType (paralelling OBJECT_COLUMN), and no new ObjectClass
value.  Looking now to confirm.

-- 
Álvaro Herrera              Valdivia, Chile  —  https://www.EnterpriseDB.com/
"El que vive para el futuro es un iluso, y el que vive para el pasado,
un imbécil" (Luis Adler, "Los tripulantes de la noche")

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. Doc: Explain about Column List feature.

  2. Doc: fix column list vs. replica identity rules.

  3. Prohibit combining publications with different column lists.

  4. Fix the check to limit sync workers.

  5. Wait for subscription to sync in t/031_column_list.sql

  6. Move prattrs to the pg_publication_rel section in docs

  7. Allow specifying column lists for logical replication

  8. Fix row filters with multiple publications

  9. Fix publish_as_relid with multiple publications

  10. Add some additional tests for row filters in logical replication.

  11. Add index on pg_publication_rel.prpubid

  12. Avoid using DefElemAction in AlterPublicationStmt

  13. Small cleanups related to PUBLICATION framework code

  14. Add PublicationTable and PublicationRelInfo structs

  15. Fix various concurrency issues in logical replication worker launching